Spreading device



Patented Aug, 1926- i v wh t-93 FFHCEQ HUGH G. LORD, OF ERIE,PENNSYLVANIA.

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Application filed September The present device is arranged in a springeye previous to the 1% spreading or'opening of the eye.

Fig. '2 a similar view with the device operated to open the eye.

Fig. 3 shows a section on the line 3-3 in Fig. 4.

Fig. 4 a section on the line 4 l in Fig. 2.

1 marks a spring eye having the usual end 2. The spreading devicecomprises two rods These rods are preferably. cylindrical in crosssection and are mounted in bear- 5 ing openings 4; in a loloclr 5.; Thehearing openings 4i are parallel and run into each other slightly sothat the rods 3 are in rolling contact. The rods have their outer endsbent up forming handles ti by means oi which the rods may be rolledrelatively to each other. i

The "front ends of the rods have their one surface cut away at 7. Theseare opposingly arranged having the outer edges 8. This cut-away portiongives to the rods a cross section having one cross dimension, that is,the diameter of the cylindrical portion of the rod, greater than thecross section at right angles to the cut-away surface. When the cut-awayportions are swung opposite each other the edges 8 are rolled around soas to be slightly closer to each other and thus permit the entrance ofthe rods into the eye 1. Won the rods are rolled to bring the cut-awayportions other words hring the greater cross dimen sions of the rodsinto alinement, the greater combined dimensions or" the rods between thewalls of the eye spread the eye as shown in Fig. 2. it will be notedthat the rods roll on each other so that there is no friction whateverand in efi'ect a to gle lever is formed with comparatively sliortoperating arms giving a tremendous power '12 and to the arms or handlesinto alinement-in interposed 6, 1924. Serial No. 736,317.

ln order to maintain the rods in similar opposing relation throughouttheir movement 1 provide the following mechanism: A post 9 extendsupwardly and centrally from the bearing block 5. A sliding block 10 ismounted on the post 9. Links 11 are connected to the slidingblock 10 byscrews 18. This arrangement maintains the post in a directionperpendicular to a line con" necting the axes of the rods andconsequently maintains the rods in a directly opposing relationthroughout their rolling action. In order to conveniently hold the rodsin the hearing, openings l vform an extension M on the post 9 whichextends through the lolock 5. This may be headed over at the bottom ofthe block and thus form a means of securing the post. The extensionpasses between the rods. the rods having a halt rouni groove 15extending partially around the rods through which the extension passes.Thus the rods are keyed in the block.

flu order to limit the outward movement 0 on the top of the post 9.

What ll claim as new is:-

1. In a spreading device, the combination of two parallel opposingspreading rods, each having one cross dimension greater than another;means for holding the rods in alinement; and means rolling the rods tobring greater cross dimensions of the rods toward and away fromalinement.

2. In a spreading device, the combination hf two parallel opposingspreading rods in rolling contact, each having one cross dimensiongreater than another; means for holding the rods in alinement; and meansrolling the rods to bring greater cross dimensions of the rods towardand away from alinernent.

3. Tn a spreading device, the combination of two parallel opposingspreading rods each rod having a portion of its surface cylindrical anda portion of the varying from the cylindrical forming one crossdimension greater than another; means for holding the rods in alinement;and means for rolling the 1" ds.

Tn a spreading device, the combination of two parallel 6 by screws thearms a stop washer 16 may be formed surface opposing sprea ng rods,

each rod having a portion of its surface cylindrlcal and a'portion ofthe surface varying from the cylindrical forming one cross dimensiongreater than another, said rods beingin rolling contact; means forholding the rods in alinement; and means rolling the rods on thecylindrical surfaces.

5. In a spreading device, the combination of two parallel opposingspreading rods, each rod having a portion of its surface cylindrical anda portion of the surface varying from the cylindrical forming one crossdimension greater than another; bearings for the rods having axescoincident with the axes of the cylindrical portions of the rods; andmeans for rolling the rods.

6; In a spreading device, the combination of two parallel opposingspreading rods, each rod having a portion of its surface cylindrical anda portion of the surface varying from the cylindrical forming one crossdimension greater than another, said rods belng in rolllng contact;bearings for the rods having axes coincident with the axes of thecylindrical portions of the rods; and means for rolling the rods.

7 In a spreading device, the combination of two parallel opposingspreading rods, each rod having a portion of its surface cylindrical anda portion of the surface varying from the cylindrical forming one crossdimension greater than another; bearings for said rods, havin axescoincident with the axesof the cylindrical portions of the rods, saidbearings opening into each 1, scenes.

other permitting the contact of the portions of the rods in thebearings; and means for rolling the rods.

8. In a spreading device, the combination of two parallel opposingspreading rods, each having one cross dimension greater than another;means rolling the rods to bring greater cross dimensions of the rodstoward and away from alinement; and

means maintaining similar opposing relaof two parallel opposingspreading rods,

each having one cross dimension greater than another; handles extendingfrom the rods; bearings in which the rods are rotatively mounted; apost-extending from the bearings; a sliding block on the post; and linksconnecting the sliding block with the handles.

' In testimony whereof I have hereunto setmy hand.

HUGH C. LORD.

